Helpers to construct device-paths from devices, partitions, files, and
for parsing and manipulating device-paths.

For non-legacy devices, this will use u-boot's device-model to construct
device-paths which include bus hierarchy to construct device-paths.  For
legacy devices we still fake it, but slightly more convincingly.
Signed-off-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Signed-off-by: NPeter Jones <pjones@redhat.com>
Signed-off-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

All of the device-path related structures should be packed.  UEFI
defines the device-path as a byte-aligned data structure.
Signed-off-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

EFI client programs need the signature information from the partition
table to determine the disk a partition is on, so we need to fill that
in here.
Signed-off-by: NPeter Jones <pjones@redhat.com>
[separated from efi_loader part, and fixed build-errors for non-
 CONFIG_EFI_PARTITION case]
Signed-off-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Prep work for next patch.
Signed-off-by: NRob Clark <robdclark@gmail.com>
Reviewed-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Check that the notification function of an
EVT_SIGNAL_EXIT_BOOT_SERVICES event is called
exactly once.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

All events of type EVT_SIGNAL_EXIT_BOOT_SERVICES have to be
notified when ExitBootServices is invoked.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Run a 10 ms periodic timer and check that it is called 10 times
while waiting for 100 ms single shot timer.

Raise the TPL level to the level of the 10 ms timer and observe
that the notification function is not called again.

Lower the TPL level and check that the queued notification
function is called.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Define variable holding tpl.
Implement RaiseTPL and RestoreTPL.
Implement TPL check in efi_signal_event.
Implement TPL check in efi_wait_for_event.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

This unit test uses timer events to check the implementation
of the following boottime services:
CreateEvent, CloseEvent, WaitForEvent, CheckEvent, SetTimer
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

We should be able to call efi_set_timer repeatedly.
So let us reset the signaled state here.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

For the correct implementation of the task priority level (TPL)
calling the notification function must be queued.

Add a status field 'queued' to events.

In function efi_signal_event set status queued if a notification
function exists and reset it after we have called the function.
A later patch will add a check of the TPL here.

In efi_create_event and efi_close_event unset the queued status.

In function efi_wait_for_event and efi_check_event
queue the notification function.

In efi_timer_check call the efi_notify_event
if the status queued is set.
For all timer events set status signaled.

In efi_console_timer_notify set the signaled state of the
WaitForKey event.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

A Python test script is provided that runs the EFI selftest
if CONFIG_CMD_EFI_SELFTEST=y.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

A testing framework for the EFI API is provided.
It can be executed with the 'bootefi selftest' command.

It is coded in a way that at a later stage we may turn it
into a standalone EFI application. The current build system
does not allow this yet.

All tests use a driver model and are run in three phases:
setup, execute, teardown.

A test may be setup and executed at boottime,
it may be setup at boottime and executed at runtime,
or it may be setup and executed at runtime.

After executing all tests the system is reset.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Macro EFI_CALL was introduced to call an UEFI function.
Unfortunately it does not support return values.
Most UEFI functions have a return value.

So let's rename EFI_CALL to EFI_CALL_VOID and introduce a
new EFI_CALL macro that supports return values.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Fix typo in teh EFI_BOOT_SERVICES_CODE description.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

We should use the predefined constants EFI_PAGE_SHIFT
and EFI_PAGE_MASK where applicable.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

The UEFI spec allows an EFI system partition (ESP, with the bootloader or
kernel EFI apps on it) to reside on a disk using a "legacy" MBR
partitioning scheme.
But in contrast to actual legacy disks the ESP is not marked as
"bootable" using bit 7 in byte 0 of the legacy partition entry, but is
instead using partition *type* 0xef (in contrast to 0x0b or 0x0c for a
normal FAT partition). The EFI spec isn't 100% clear on this, but it even
seems to discourage the use of the bootable flag for ESPs.
Also it seems that some EFI implementations (EDK2?) even seem to ignore
partitions marked as bootable (probably since they believe they contain
legacy boot code).
The Debian installer [1] (*not* mini.iso), for instance, contains such an
MBR, where none of the two partitions are marked bootable, but the ESP
has clearly type 0xef.
Now U-Boot cannot find the ESP on such a disk (USB flash drive) and
fails to load the EFI grub and thus the installer.

Since it all boils down to the distro bootcmds eventually calling
"part list -bootable" to find potential boot partitions, it seems logical
to just add this "partition type is 0xef" condition to the is_bootable()
implementation.

This allows the bog standard arm64 Debian-testing installer to boot from
an USB pen drive on Allwinner A64 boards (Pine64, BananaPi-M64).
(Ubuntu and other distribution installers don't have a legacy MBR, so
U-Boot falls back to El Torito there).

[1] https://cdimage.debian.org/cdimage/daily-builds/daily/arch-latest/arm64/iso-cd/Signed-off-by: NAndre Przywara <andre.przywara@arm.com>
Reviewed-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Variable always should only be appended but not overwritten by
lib/efi_loader/Makefile.

Remove variable efiprogs which is not otherwise used.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Replace all occurences of helloworld by generalized forms.
This allows us to build additional EFI applications that are
included into the U-Boot binary without loading
scripts/Makefile.lib with specific filenames.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

In scripts/Makefile.lib we build section including helloworld.efi.
This allows to load the EFI binary with command 'bootefi hello'.

scripts/Makefile.lib contains explicit references to strings
containing helloworld and hello_world. This makes it impossible
to generalize the coding to accomodate additional built in
EFI binaries.

Let us rename the variables __efi_hello_world_* to
__efi_helloworld_*.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

The target
$(obj)/helloworld.so:
exists twice in Makefile.lib.

If you add an echo command to each of the two recipes you get
warnings like:

scripts/Makefile.lib:383: warning:
overriding recipe for target 'drivers/power/battery/helloworld.so'
scripts/Makefile.lib:379: warning:
ignoring old recipe for target 'drivers/power/battery/helloworld.so'

This patch removes the obsolete target.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Commit f494950b (efi_loader: call __efi_exit_check in efi_exit) added a call
to __efi_exit_check inside efi_exit to account for the fact that we're exiting
the efi_exit function via a longjmp call.

However, __efi_exit_check also swizzles gd to the application gd while the
longjmp will put us back into EFI context, so we need the efi (u-boot) gd.

This patch fixes that up by explicitly setting gd back to efi_gd before
doing the longjmp. It also adds a few comments on why it does that.
Signed-off-by: NAlexander Graf <agraf@suse.de>

To understand what is happening in OpenProtocol or LocateProtocol
it is necessary to know the protocol interface GUID.
Let's write a debug message.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

The calls to __efi_entry_check and __efi_exit_check have to match.
If DEBUG is defined, panic() will be called otherwise.

If debugging is activated some Travis CI builds fail due to an
assertion in EFI_CALL without the patch.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>

There is no need to use attribute EFIAPI for
efi_disk_rw_blocks. It is not an API function.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

Command 'bootefi hello' currently uses CONFIG_SYS_LOAD_ADDR
as loading address.

qemu machines have by default 128 MiB RAM.
CONFIG_SYS_LOAD_ADDR for x86 is 0x20000000 (512 MiB).
This causes 'bootefi hello' to fail.

We should use the environment variable loadaddr if available.
It defaults to 0x1000000 (16 MiB) on qemu_x86.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: NAlexander Graf <agraf@suse.de>

legacy_hole_base_k and legacy_hole_size_k are defined but
not used.
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

Enable this option for link so that the timer is available earlier.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

With SPL we often have limited memory and do not need very many bootstage
records. Add a separate Kconfig option for SPL.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

The CONFIG_BOOTSTAGE_USER_COUNT option is no-longer needed since we can now
support any number of user IDs. Also BOOTSTAGE_ID_COUNT is not needed now.

Drop these unused options.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

With bootstage we need access to the timer before driver model is set up.
To handle this, put the required state in global_data and provide a new
function to set up the device, separate from the driver's probe() method.

This will be used by the 'early' timer also.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

Once U-Boot relocates itself the existing driver-model timer (if any) is
no-longer valid until the device is reinitialised. Any use of the device
may cause a crash. To handle this, set the timer to NULL after relocation.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

This adds support to Intel Cherry Hill board, a board based on
Intel Braswell SoC. The following devices are validated:

- serial port as the serial console
- on-board Realtek 8169 ethernet controller
- SATA AHCI controller
- EMMC/SDHC controller
- USB 3.0 xHCI controller
- PCIe x1 slot with a graphics card
- ICH SPI controller with an 8MB Macronix SPI flash
- Integrated graphics device as the video console
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

FSP's built-in UPD configuration enables PUNIT power configuration,
but on B0 stepping, this causes CPU hangs in fsp_init(). Disable it.
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

Add FSP related configuration for Braswell.
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

This adds microcode device tree fragment for Braswell B0 (406C2),
C0 (406C3) and D0 (406C4) stepping SoC.
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

This adds initial Intel Braswell SoC support. It uses Intel FSP
to initialize the chipset.

Similar to its predecessor BayTrail, there are some work to do to
enable the legacy UART integrated in the Braswell SoC.
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>

FSP spec 1.1 adds 3 new APIs and their offsets are in the header.
Update the 'fsp hdr' command to show these new entries.
Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>